US Patent Issued to Canon on July 15 for "Optical system and image pickup apparatus having the same" (Japanese Inventor)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,360,339, issued on July 15, was assigned to Canon K.K. (Tokyo).

"Optical system and image pickup apparatus having the same" was invented by Takumi Suzuki (Saitama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical system includes in order from an object side to an image side: a front lens unit having a positive refractive power; and a rear lens unit including a lens having a positive refractive power, in which the front lens unit includes a lens arranged closest to the object side has a negative refractive power, an interval between the front lens unit and the rear lens unit changes for focusing, a radius of curvature of an object-side sur...